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| 1 | 高Zn含量Al-Zn-Mg-Cu系铝合金的凝固态显微组织显示文摘利用OM、SEM、XRD及TEM等分析方法,对几种高Zn含量Al-Zn-Mg-Cu系合金的凝固态组织进行研究,通过比较不同合金中一次凝固析出相的种类、形貌结构及合金元素在各相中的显微分布,揭示了不同凝固析出相的形成过程与机理。结果表明:法系7449、7056合金晶界处粗大析出相为T(Mg(Zn,Cu,Al)2)四元相共晶组织,且大部分共晶组织网层状结构发达,共晶组织特征明显;美系7136与7095合金晶界处粗大的网状结构第二相数目大大减少,主要以棒条状结构存在,且部分粗大第二相是以两相(T(Al Zn Mg Cu)与θ(Al2Cu))伴生的结构形态存在;不同合金凝固态显微组织的差异是由合金成分的不同而导致的凝固进程的差异造成的;其中,Cu元素含量对凝固态组织中一次凝固析出相的种类及结构形貌有较大影响。 | 滕海涛 熊柏青 张永安 刘红伟 贺昕 | 2015 | 中国有色金属学报2015，25，4： | 27 |
| 2 | Thermodynamic properties and mixing thermodynamic parameters of Ba-Al,Mg-Al,Sr-Al and Cu-Al metallic melts显示文摘Application of equations of mixing thermodynamic parameters formulated on the basis of the coexistence theory of metallic melts in Ba-Al, Mg-Al, Sr-Al and Cu-Al melts leads to fruitful results that not only the evaluated mass action concentrations agree well with the measured activities, but also the calculated mixing thermodynamic parameters are quite coincident with the experimental values. Moreover, the calculated mass action concentrations strictly obey the mass action law. The evaluated mixing thermodynamic parameters have very fine regularity: the mixing free energy is composed of standard free formation energies of all compounds and chemical potentials of all structural units at equilibrium; the mixing enthalpy consists of standard formation enthalpies of all compounds; the mixing entropy is composed of standard entropies of all compounds and configuration entropies of all structural units at equilibrium. As the equations of mixing thermodynamic parameters formulated are widely applicable to metallic melts involving compound formation, they can be used as the second practical criterion to determine whether thermodynamic models of metallic melts are correctly formulated. | 张鉴 | 2004 | 中国有色金属学会会刊:英文版2004，14，2： | 2 |
| 3 | Thermodynamic Properties and Mixing Thermodynamic Parameter of Binary Metallic Melt Involving Compound Formation显示文摘Based on the coexistence theory of metallic melts involving compound formation, the theoretical calculation equations of mixing thermodynamic parameters are established by giving up some empirical parameters in the associated solution model. For Fe-Al, Mn-Al and Ni-Al, the calculated results agree well with the experimental values, testifying that these equations can exactly embody mixing thermodynamic characteristics of these melts. | ZHANGJian | 2005 | Journal of Iron and Steel Research(International)2005，12，2： | 2 |
| 4 | 二元含化合物金属熔体的热力学性质和混合热力学参数显示文摘在金属熔体共存理论的基础上,通过舍弃缔合溶液模型中某些经验参数,从理论上系统地制定了如下金属熔体混合热力学参数计算公式:混合自由能:△Gm=∑x[i∑i=3Ni△Gθi+RT j∑j=1NjlnNj];过剩自由能:△GXS=△Gm-RT(aln a+ bln b);混合热焓:△Hm= =∑x i∑ i=3 Ni△Hθi;混合熵:△Sm=∑x[i∑i=3Ni△Gθi+RT j∑j=1NjlnNj];过剩熵:△SXS=△Sm-R(aln a+bln b).计算结果与实测值极为符合,证明这些公式可以确切地反映本熔体的混合热力学性质.金属熔体混合热力学参数计算公式的制定就使金属熔体的热力学模型获得两个实践检验标准(活度和混合热力学参数)及一个理论检验标准(质量作用定律),从而有力地保证金属熔体的共存理论更严格和真实地反映金属熔体的结构实际. | 张鉴 | 2003 | 安徽工业大学学报(自然科学版)2003，20，z1： | 0 |
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